Why do market researched ideas always feel so generic?

It feels risky to spend time building something just for yourself when everyone says you need to validate a massive market first.

But the truth is market research usually makes you copy what everyone else is already doing. When you fix an annoying bottleneck in your own day you build something with a very sharp edge that nobody else thought of. Sharing those little tools is how our best products actually started.

Have you ever turned a private script into a real public project?